Home / 91,235.07-125,865.30-57,220.38

Finding the Fourth Proportional to 91,235.07, 125,865.30 and 57,220.38

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Solution

The fourth proportional to 91,235.07, 125,865.30 and 57,220.38 is: 78,939.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,235.07 : 125,865.30 = 57,220.38 : x
  2. Step 2: Convert to fraction form
    91,235.07/125,865.30 = 57,220.38/x
  3. Step 3: Cross multiply
    91,235.07x = 125,865.30 × 57,220.38
  4. Step 4: Simplify right side
    91,235.07x = 7,202,060,294.81
  5. Step 5: Solve for x
    x = 7,202,060,294.81/91,235.07
  6. Step 6: Final answer
    x = 78,939.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.